Last August we saw a peculiar experiment that forced Cyprus Hill music on the color changing cells of a squid. The cells make colors by stretching sacs of pigment; the larger they get the more of that color is shown. Normally this is used for camouflage. The image on the left is the reaction from connecting headphone wires while music is being played.

But we can’t all get our hands on this type of wet-ware — especially if life far inland. So [Kemper] got to work writing some Processing code. The result is seen on the right. It does a good job of replicating the motion and color palette of the original. He’s put together a web-based demonstration which you can interact with using your mouse cursor. But we also saw him demonstrate a Kinect based version at our local hackerspace.

Cephalopods have a nifty trick where they can change color by altering the size and shape of chromataphors, or “colored cell thingy blobs”. Like most cells, these chromataphors react to electricity in different ways. Mainly, expanding and contracting.

You know who thinks building a robotic octopus is an awesome idea? EVERYONE. Apparently the idea is a solid enough idea that the European Commision has funded this project. The goal is to mimic the capabilities of the squishiest of the cephalopods in order to advance soft robotics. Or possibly to take over the world. They are hoping to have a fully capable robot octopus with no rigid structures at all.

You may be thinking that making a squirming tentacle is easy business. What they are attempting however, is the actual movement of an octopus including extension/contraction as well as grasping. This requires a complex system of control wires as well as “artificial muscular hydrostats” to allow it to do all these movements. A flexible skin covered in sensors will be added to the final design.